combine: Don't remove original files in case of problems
combine: Don't remove original files in case of problems

adongy/spreads,adongy/spreads,gareth8118/spreads,adongy/spreads,DIYBookScanner/spreads,gareth8118/spreads,miloh/spreads,jbaiter/spreads,DIYBookScanner/spreads,DIYBookScanner/spreads,jbaiter/spreads,nafraf/spreads,nafraf/spreads,gareth8118/spreads,jbaiter/spreads,nafraf/spreads,miloh/spreads,miloh/spreads